Circular-knitting machine



(No Model.) 2 Sheets-Sheet 1. W. D. HUSE & O. F. CARR.

GIRGULAR KNITTING MAOHINB.

No. 413,142. Patented Oct. 15, 1889.

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Witrjessest (No Model.) 2 Sheets-Sheet 2.

W. D. HUSH & O. F. CARR.

CIRCULAR KNITTING MACHINE.

No. 413,142. I Patented Oct. 15, 1889.

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UNTTED STATES PATENT UEEIGE.

WVARREN D. I-IUSE AND CHARLES F. CARR, OF LACONIA, NEXV HAMPSHIRE.

CIRCULAR-KNITTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 13,142, dated October 15, 1889.

Application filed August 13, 1888. Serial No. 282,602. (No model.)

To aZZ whom it may concern.-

Be it known that we, WARREN D. HUsE and CHARLES F. CARR, of Laconia, county of Belknap, State of New Hampshire, have invented an Improvement in Circular-Knitting Machines, of which the following description, in connection with the accompanying drawings, is a specificatiomlike letters on the drawings representing like parts.

This invention is an improvement in circular-knitting machines of that class in which two sets of needles are employed for the production of ribbed or tuck Work in circular fabrics, one set, working horizontally, called dial-needles, and the other vertically, called cylinder-needles.

In another application, Serial No. 280,013, filed by me July 16, 1888, a cap or cam plate provided with drawing-in and throwing-out cams for actuating the dial-needles is shown and described, the said cams being connected by rods to rings mounted on the cam-plate, and oscillated by rods to produce movement of the said cams.

My present invention is an improvement upon the construction shown and described in the said application, and has for its object to provide simple and efficient means, as will be described, for actuating the drawing-in and throwing-out cams.

In accordance with my present invention I employ a single ring, to which are secured arms provided with cam-slots, which act upon studs or projections on the cams referred to to produce movement of the same, according to the kind of work desired.

Myinvention therefore consists, essentially, in the combination, in aknitting-machine, of a cam or dial plate and two or more sets of cams carried thereby and movable with relation to each other, as described, with arms provided with cam-slots and connected to the said cams, and with a movable ring carried by the camplate, and to which the said arms may be connected, substantially as will be described.

Figure 1 is a top or plan view of a camplate embodying my invention; Fig. 2, a section of the cam-plate on line 00 m, Fig. 1; Fig. 3, an under side view of the cam-plate, to more clearly show the operation of the cams, the dotted and full lines showing the cams in their extreme position.

. clined arm.

The cam-plate a, provided, as shown, with a hub a, and having secured to its under side, as'herein shown, eight sets of cams for operating the dial-needles of a knitting-machine, is substantially such as shown in the application referred to.

Each set of cams (see Fig. 3) is composed of a throwing-out cam a and a drawing'in cam of, the said drawing-in cams being pivoted, as at a. Each drawing-in cam a is provided, as shown, with a stud or screw 1), which is extended through a substantially radial slot 1) in the cam-plate, and the said stud is also extended through a cam-slot in an arm 5 secured, as by screws I), to a ring Won the camplate.

As herein shown, four of the throwing-out cams (marked, respectively, 2 3 4'5 in Fig. 3) are made movable, they being pivoted to the cam-plate, as at 0. (See Figs. 1 and 2..)

Each movable throwing-out cam is provided with a stud or screw 0, extended through a substantially radial slot in the cam-plate and through a cam-slot c in an arm. 0 secured to the ring if. The cam-slots in some of the arms 11 are made of different shape than the canrslots in the remaining arms b viz: The cam-slots (marked 25) are made, as shown, with two upwardly inclined arms, while the remaining cam-slots (marked 2 6) are made with a horizontal and an upwardly-in- The cam slots in some of the arms 0 are made with two downwardly-inclined arms, they being marked 30, whereas the remaining cam-slots (marked 31) are made with a horizontal and a downwardly-inclined arm.

As shown in the drawings, the drawing-in cams are connected to the arms 11 to operate in pairs-that is, adjacent cams have their studs extended through the cam slots 25, while the next two cams have theirstuds extended through cam-slots 26, and so 011, whereas the arms 0 are arranged to connect the movable throwingout cam with alternately-arranged and differently-shaped slots.

lVith the cams arranged and connected as shown in the drawings the drawing-in cams connected to the arms provided with the cam slots 25 are in their innermost or operative position, as shown in Fig. 3, while the drawingin cams connected to the arms provided with the slots 26 are in theiroutermost or inoperative posit-ion,whereas themovablethrowing-out cams connected to the arms 0 pro vided with the cam-slots 30, are in their outermost or operative position, and the movable throwing-out cams connected to the arms 0 provided with the cam-slots 31, are in their innermost or inoperative position.

Let it be supposed that the ring is being moved in the direction of arrow 20, Fig.1. As the ring is moved in the direction'of arrow the arms 11 are moved toplace the stud b at the apex of the cam-slot 25, in which position the drawing-in cams actuated by the said cam-slots are rendered inoperative, while the drawing-in cams operated by the slots 26, and which are now inoperative, are rendered operative, the stud I) being placed on the horizontal arm of the cam-slot 26. On the further movement of the ring in the direction of arrow 20 the studs Z) of all the drawing-in cams are in the extreme right-hand ends of the cam-slots 25 26, thus placing all the drawing-in cams in operative position. It will thus be noticed that part of the drawing-in cams are inoperative when the studs are in the apexes of the cam-slots 25 and the remaining drawing-in cams inoperative when the studs are on the inclined arms of the cam-slots 26.

The movable throwing-out cams are placed in their outward or operative position when the studsc are at either end of the cam-slot and at the end of the horizontal arm of the slot 31, and the said cams are in their inoperative or inward position when the studs 0 are at the apexes of the cam-slots 30 and when in the inclined arms of the slots 31.

As shown in the drawings in Fig. 3, the cams in their full-line position are arranged, as will be described, to produce double tucks with a plain stitch or space between them. For instance, let it be supposed that the nee" dle, with one thread in its hook, is passing by the throwing-out cam (marked 2) in its innermost position, as shown in Fig. '3. The needle as it passes by the cam 2 is moved out far enough to take another thread in its hook; but the said cam, being in its innermost position, does not move the needle out sufficient] y far to slip the threads behind the latch of the said needle, and as the needle passes by the drawing-in cam (marked 10) in its outermost position it is not affected by said cam. The needle now has two threads in its hook, and as it passes by the stationary throwing-out cam a (marked the needle is moved out far enough to slip the two threads in the hook behind the latch of the said needle and another thread is laid in the hook. The needle now has one thread in the hook and two hehind the latch, and as it passes the drawingin cam (marked 51) in its outermost position the said needle is not moved in far enough to cast the two threads behind the latch over the thread in the hook, and as the needle passes by the movable throwingout cam passes by the drawing-in cam (marked in its innermost position it is mo 1 in by the said cam a sufficient distance to cast the three threads behind the latch over the thread in the hook, and thus form a double tuck. The needle now has one thread in its hook, and as it passes by the stationary throwing-out cam (marked 55) the said thread is slipped behind the latch and another thread laid in the hook, and the thread behind the latch is cast off by the drawing-in cam 54in its innermost positiou. The remaining cams in the position indicated in Fig. 3 by full lines produce in the same manner a double tuck and a plain stitch or space.

If it is desired to make other forms of tuckwork, the arms 19 0 may be disconnected from the movable ring-as, for instance, if it is desired to form a single tuck, starting with the cam marked 2 the drawing-in cam 10 will occupy its full-line position and the drawingin cam 51 its dotted-line position, and in this case the needle having one thread in its hook receives another thread in its hook as it passes the cam 2, and as the needle passes the throwing-out cam 50 the two threads are slipped behind the latch and another thread laid in the hook, and the two threads behind the latch are cast off by the drawing-in cam 51 in its dotted-line or innermost position.

In the formation of tuck-work all the drawing-in cams may be made stationary and one or more of the throwing-out cams made movable, and in this case tuck-work may be formed as follows, viz: The cam 2, being in its innermost position, moves the needle out sufficiently to take a second thread in its hook, and the said threads, being in the hook of the needle, are not cast off by the drawing-in cam 10 in its innermost position, and the two threads in the hook are slipped behind the latch by the throwing-out cam 50 and another thread laid in the hook, and the two threads behind the latch are cast over the thread in the hook by the drawing-in cam 51 in its innermost position. So, also, if desired, all the throwing-out cams may be made stationary and occupy their normal or outermost position, the drawing-in cams being in this case made movable. For instance, let it be supposed that the cam 2 is in its outermost or dotted-line position, and that it is desired to form a single tuck. In this case the needle having one thread in the hook is moved out by the cam 2 sufficiently far to slip the thread behind the latch and at the same time receive another thread in its hook. As the needle, having one thread in the hook and one thread behind the latch, passes by the drawing-in cam 10 in its outermost position it is not acted upon by the said cam, and as it passes by the stationary throwing-out cam 50 the thread in the hook is slipped behind the latch and another thread laid in the hook, thus leaving two threads behind the latch and one in the hook, and the two threads behind the latch are cast off by the drawing-in cam 51 in its innermost position.

1. In a knitting-machine, a dial cam-plate and two or more sets of cams carried thereby and movable with relation to each other, as described, combined with arms provided with cam-slots and connected to the said cams, and with a movable ring carried by the cam-plate and to which the said arms may be connected, substantially as described.

2. In a knitting-machine, a dial cam-plate and movable drawing-in and throwing-out cams, combined with arms provided with camslots and connected to the said cams, and with a movable ring carried by the cam-plate,

and to which the said arms maybe connected, substantially as described.

3. In a knitting-machine, a dial cam-plate and two or more sets of cams, each consisting of a throwing-out and a drawing-in cam, one or more of the said throwing-out cams being made movable, combined with arms provided with cam-slots to engage the studs on the movable cams, and with a movable ring carried by the cam-plate, and to'which the said arms are connected, substantially as and for the purpose specified.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

W'ARREN D. HUSE. CHAS. F. CARR. Witnesses:

M. M. ROBINSON, S. R. SANBORN. 

